US20150031789A1 - Rubber tyre compound - Google Patents
Rubber tyre compound Download PDFInfo
- Publication number
- US20150031789A1 US20150031789A1 US14/367,600 US201214367600A US2015031789A1 US 20150031789 A1 US20150031789 A1 US 20150031789A1 US 201214367600 A US201214367600 A US 201214367600A US 2015031789 A1 US2015031789 A1 US 2015031789A1
- Authority
- US
- United States
- Prior art keywords
- compound
- rubber tyre
- basalt fibres
- molecular weight
- bonding agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/548—Silicon-containing compounds containing sulfur
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Definitions
- the present invention relates to a new rubber tyre compound composition. More specifically, the present invention relates to a new tread compound composition.
- Silica has long been used as a reinforcing filler in tread compounds, as a partial or total substitute for carbon black.
- Silica has advantages over carbon black in terms of both rolling resistance and wet road-holding performance.
- Silica is used in conjunction with silane bonding agents, which bond with silanol groups to prevent silica particles from forming hydrogen bonds, and at the same time bond the silica chemically to the polymer base.
- Trialkoxymercaptoalkyl-silanes are a particularly interesting class of silane bonding agents, especially as regards the advantages they afford in terms of rolling resistance and reducing volatile substance emission.
- Trialkoxymercaptoalkyl-silanes while improving rolling resistance, have been found to aggravate abrasion resistance.
- the Applicant has surprisingly discovered that using short basalt fibres in rubber tyre compounds ensures superior abrasion resistance, even in the presence of trialkoxymercaptoalkyl-silanes, while at the same time improving rolling resistance.
- Basalt is a dark or black effusive volcanic rock usually containing 50% silica (SiO 2 ). More specifically, basalt contains 45-55% SiO 2 , 10-15% Al 2 O 3 , 15-20% CaO, 5-14% FeO, 5-12% MgO, 2-6% alkalis, and 0.5-2% TiO 2 .
- Basalt has the advantage of being convertible to fibres in the same way as glass. More specifically, it is heated to melting temperature (about 1400° C.) in a refractory furnace, and the melt is extruded through minute holes in a mainly platinum container to form continuous basalt threads.
- Basalt has superior mechanical characteristics, while at the same time being extremely cheap.
- basalt fibres Because of their heat-insulating and soundproofing properties, chemical stability, and stable mechanical properties, even at high temperature, basalt fibres have so far been used in civil applications.
- a rubber tyre compound comprising a polymer base; said compound being characterized by comprising basalt fibres with a length/diameter ratio ranging from 20 to 2000 and preferably from 100 to 300.
- the compound comprises 1 to 20 phr, and preferably 8 to 12 phr, of basalt fibres.
- said basalt fibres are coated with a silane bonding agent.
- the compound comprises silica, and a silane bonding agent in the trialkoxymercaptoalkyl-silane class.
- the silane bonding agent is of molecular formula (1)
- the compound comprises silica with a surface area of 100 to 220 m 2 /g.
- said polymer base comprises a LMW S-SBR polymer compound containing 20 to 50% styrene and 30 to 70% vinyl, and comprising 10-90% of a first fraction with a mean molecular weight of 50 to 100 ⁇ 10 3 and a molecular weight distribution of 1.5, and 10-90% of a second fraction with a mean molecular weight of 800 to 1500 ⁇ 10 3 and a molecular weight distribution of 3.0.
- S-SBR stands for styrene-butadiene rubber obtained in solution
- E-SBR for styrene-butadiene rubber obtained in emulsion
- compound A contains a silane bonding agent not in the trialkoxymercaptoalkyl-silane class
- compound B contains a silane bonding agent of formula (I) in the trialkoxymercaptoalkyl-silane class.
- the four compounds C-F according to the invention contain basalt fibres as a partial substitute for silica. More specifically, both basalt fibres coated with silane bonding agent and uncoated basalt fibres were used. And both types of fibres were used with and without LMW S-SBR.
- a 230-270-litre tangential-rotor mixer was first loaded with the polymer base, silica, silane bonding agent, and basalt fibres (if any), to a fill factor of 66-72%.
- the mixer was operated at a speed of 40-60 rpm, and the resulting compound was unloaded on reaching a temperature of 140-160° C.
- the compound from the previous stage was processed further in the mixer operated at a speed of 40-60 rpm, and was unloaded on reaching a temperature of 130-150° C.
- the curing system of sulphur and accelerants was added to the compound from the previous stage to a fill factor of 63-67%.
- the mixer was operated at a speed of 20-40 rpm, and the resulting compound was unloaded on reaching a temperature of 100-110° C.
- Table I shows the compositions in phr of the five compounds.
- SILICA is marketed by EVONIK under the trade name VN3, and has a surface area (N2SA) of 170m 2 /g.
- SILANE1 is a silane bonding agent marketed by DEGUSSA under the trade name SI75.
- SILANE2 is of molecular formula (I)
- E-SBR contains 23-45% styrene.
- S-SBR contains 25-45% styrene and 20-70% vinyl, and has a mean molecular weight of 800 to 1500 ⁇ 10 3 and a molecular weight distribution of 3.0.
- LMW S-SBR is an S-SBR polymer compound containing 20-50% styrene and 30-70% vinyl, and comprising 10-90% of a first fraction with a mean molecular weight of 50 to 100 ⁇ 10 3 and a molecular weight distribution of ⁇ 1.5, and 10-90% of a second fraction with a mean molecular weight of 800 to 1500 ⁇ 10 3 and a molecular weight distribution of ⁇ 3.0.
- the basalt fibres used are 3 mm long and 13 ⁇ m in diameter, and the silane bonding agent coating is epoxy-compatible.
- Other types of coatings are bis-trialkoxy-alkyl-sulphide silane or trialcoxy-alkyl-mercapto silane.
- Table II shows the values indexed with respect to compound A.
- the basalt fibres (compound C) make up for the abrasion resistance losses caused using the silane bonding agent of formula (I) (compound B), but without compromising the rolling resistance values.
- LMW S-SBR further improves abrasion resistance (compounds D and F).
- basalt fibres comprising a main component of SiO 2 can be coated with a silane bonding agent by which to interact with the polymer base more effectively than other reinforcing materials, such as Kevlar and carbon.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Reinforced Plastic Materials (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO2011A001208 | 2011-12-23 | ||
IT001208A ITTO20111208A1 (it) | 2011-12-23 | 2011-12-23 | Mescola di gomma per pneumatici |
PCT/IB2012/057693 WO2013093897A1 (en) | 2011-12-23 | 2012-12-24 | Rubber tyre compound |
Publications (1)
Publication Number | Publication Date |
---|---|
US20150031789A1 true US20150031789A1 (en) | 2015-01-29 |
Family
ID=45541026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/367,600 Abandoned US20150031789A1 (en) | 2011-12-23 | 2012-12-24 | Rubber tyre compound |
Country Status (6)
Country | Link |
---|---|
US (1) | US20150031789A1 (de) |
EP (1) | EP2794289B1 (de) |
JP (1) | JP6177796B2 (de) |
CN (1) | CN104010829A (de) |
IT (1) | ITTO20111208A1 (de) |
WO (1) | WO2013093897A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9952082B2 (en) | 2016-05-10 | 2018-04-24 | Palo Alto Research Center Incorporated | Printed level sensor |
WO2019174891A1 (en) | 2018-03-16 | 2019-09-19 | Huntsman Advanced Materials Licensing (Switzerland) Gmbh | Compositions for use in impregnation of paper bushings |
WO2019175338A1 (en) | 2018-03-16 | 2019-09-19 | Huntsman Advanced Materials Licensing (Switzerland) Gmbh | Curable mixtures for use in impregnation of paper bushings |
US11200791B2 (en) | 2016-01-22 | 2021-12-14 | Aktiebolaget Skf | Sticker and condition monitoring system |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106432851A (zh) * | 2015-08-04 | 2017-02-22 | 章丘市海泰涂覆布业有限公司 | 一种玄武岩橡胶轮胎 |
CN109181038B (zh) * | 2018-07-25 | 2020-05-19 | 大陆马牌轮胎(中国)有限公司 | 一种改性白炭黑胎面胶的制备方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4471093A (en) * | 1982-02-26 | 1984-09-11 | Sumimoto Rubber Industries, Ltd. | Elastomer composition comprising a blend of SBR rubbers |
US20020011293A1 (en) * | 1999-03-02 | 2002-01-31 | David John Zanzig | Tire with reinforced rubber sidewall |
US20090133793A1 (en) * | 2006-08-31 | 2009-05-28 | Bergman Brian R | Elastomer composition having glass micro fibers |
US20110021662A1 (en) * | 2008-01-24 | 2011-01-27 | Bridgestone Corporation | Mix comprising trialkoxymercaptoalkyl-silanes |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IE35039B1 (en) * | 1970-03-31 | 1975-10-29 | Pirelli | Reinforcing element for flexible structures in particular pneumatic tyres |
JP3204330B2 (ja) * | 1992-04-14 | 2001-09-04 | 大日本インキ化学工業株式会社 | セメントモルタル成形品の製造法 |
JP3384787B2 (ja) * | 2000-07-14 | 2003-03-10 | 住友ゴム工業株式会社 | タイヤ用トレッドゴム組成物 |
JP2002047378A (ja) * | 2000-08-01 | 2002-02-12 | Sumitomo Rubber Ind Ltd | タイヤ用トレッドゴム組成物 |
AU2003229147A1 (en) * | 2003-05-16 | 2004-12-03 | Groep Masureel Veredeling | Basalt containing fabric |
JP4516298B2 (ja) * | 2003-10-21 | 2010-08-04 | 住友ゴム工業株式会社 | タイヤトレッド用ゴム組成物 |
US20090143524A1 (en) * | 2005-09-29 | 2009-06-04 | Yoshifumi Nakayama | Fiber-Reinforced Thermoplastic Resin Composition, Method for Producing the Same, and Carbon Fiber for Thermoplastic Resin |
US7767746B2 (en) * | 2006-05-09 | 2010-08-03 | Alliant Techsystems Inc. | Basalt fiber and nanoclay compositions, articles incorporating the same, and methods of insulating a rocket motor with the same |
JP5446090B2 (ja) * | 2006-12-26 | 2014-03-19 | 住友化学株式会社 | プロピレン系樹脂組成物とそのペレットおよびそれらからなる成形体 |
US7625965B2 (en) * | 2007-02-08 | 2009-12-01 | Momentive Performance Materials Inc. | Rubber composition, process of preparing same and articles made therefrom |
JP2008291395A (ja) * | 2007-05-25 | 2008-12-04 | Central Glass Co Ltd | ゴム補強用バサルト繊維およびそれを用いた伝動ベルト |
JP2008303333A (ja) * | 2007-06-08 | 2008-12-18 | Sumitomo Rubber Ind Ltd | ゴム組成物およびそれを用いたキャップトレッドを有するタイヤ |
JP5236955B2 (ja) * | 2008-01-25 | 2013-07-17 | 曙ブレーキ工業株式会社 | 摩擦材用バインダー樹脂組成物、それを含む熱硬化性樹脂複合材料および摩擦材 |
DE102008015023A1 (de) * | 2008-03-19 | 2009-09-24 | Continental Aktiengesellschaft | Kautschukmischung mit niedrigem Wärmeaufbau |
JP2009275063A (ja) * | 2008-05-12 | 2009-11-26 | Akebono Brake Ind Co Ltd | 摩擦材 |
US20100031535A1 (en) * | 2008-08-05 | 2010-02-11 | Gregory Ross Leedy | Printed sole for a shoe and method of making |
CN101713151A (zh) * | 2008-10-06 | 2010-05-26 | E.I.内穆尔杜邦公司 | 复合增强材料及其制造方法和用途 |
-
2011
- 2011-12-23 IT IT001208A patent/ITTO20111208A1/it unknown
-
2012
- 2012-12-24 WO PCT/IB2012/057693 patent/WO2013093897A1/en active Application Filing
- 2012-12-24 JP JP2014548327A patent/JP6177796B2/ja not_active Expired - Fee Related
- 2012-12-24 EP EP12826562.6A patent/EP2794289B1/de active Active
- 2012-12-24 CN CN201280064188.5A patent/CN104010829A/zh active Pending
- 2012-12-24 US US14/367,600 patent/US20150031789A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4471093A (en) * | 1982-02-26 | 1984-09-11 | Sumimoto Rubber Industries, Ltd. | Elastomer composition comprising a blend of SBR rubbers |
US20020011293A1 (en) * | 1999-03-02 | 2002-01-31 | David John Zanzig | Tire with reinforced rubber sidewall |
US20090133793A1 (en) * | 2006-08-31 | 2009-05-28 | Bergman Brian R | Elastomer composition having glass micro fibers |
US20110021662A1 (en) * | 2008-01-24 | 2011-01-27 | Bridgestone Corporation | Mix comprising trialkoxymercaptoalkyl-silanes |
Non-Patent Citations (2)
Title |
---|
ampolymer.com , American Polymer Standers Corporation, Mark-Houwink Parameters for Polymers, http://www.ampolymer.com/Mark-HouwinkParameters.html, 2015. * |
machine translation of JP2008291395 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11200791B2 (en) | 2016-01-22 | 2021-12-14 | Aktiebolaget Skf | Sticker and condition monitoring system |
US9952082B2 (en) | 2016-05-10 | 2018-04-24 | Palo Alto Research Center Incorporated | Printed level sensor |
WO2019174891A1 (en) | 2018-03-16 | 2019-09-19 | Huntsman Advanced Materials Licensing (Switzerland) Gmbh | Compositions for use in impregnation of paper bushings |
WO2019175338A1 (en) | 2018-03-16 | 2019-09-19 | Huntsman Advanced Materials Licensing (Switzerland) Gmbh | Curable mixtures for use in impregnation of paper bushings |
US11718706B2 (en) | 2018-03-16 | 2023-08-08 | Huntsman Advanced Materials Licensing (Switzerland) Gmbh | Compositions for use in impregnation of paper bushings |
Also Published As
Publication number | Publication date |
---|---|
CN104010829A (zh) | 2014-08-27 |
ITTO20111208A1 (it) | 2013-06-24 |
WO2013093897A1 (en) | 2013-06-27 |
JP2015502447A (ja) | 2015-01-22 |
JP6177796B2 (ja) | 2017-08-09 |
EP2794289B1 (de) | 2016-03-23 |
EP2794289A1 (de) | 2014-10-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BRIDGESTONE CORPORATION, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BOTTI, FRANCESCO;AGORETTI, PASQUALE;REEL/FRAME:033182/0931 Effective date: 20140618 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |